Fuel pressure

[Charger]

I fellas, am I correct in thinking that the minimum fuel pressure is 47 psi? I'm having a problem that the truck will start and rev up to 2000 Rpms and drop to 1000 stutter and die. Rented a fuel pressure kit (was a new one) and hooked it up to the Schrader valve on the fuel rail. getting 35 psi and dropping to 23. Fuel pump is running its **** off with a smooth and steady whirr. The pump shuts off at 35 psi. What else controls the pressure?? The PO swears that the pump was changed about a month before I bought it. And this truck sat a while before I bought it.

 

[RonJon '06]

Yeah, normal fuel pressure should be around 50-55 psi. Maybe a defective pump?

 

[wink]

My Jeep had similar symptoms a few years back. Wasn't east to see or find, but there was a small crimp in the fuel line where it went through the firewall.

wink

 

[Redtruck-VA]

I fellas, am I correct in thinking that the minimum fuel pressure is 47 psi? I'm having a problem that the truck will start and rev up to 2000 Rpms and drop to 1000 stutter and die. Rented a fuel pressure kit (was a new one) and hooked it up to the Schrader valve on the fuel rail. getting 35 psi and dropping to 23. Fuel pump is running its **** off with a smooth and steady whirr. The pump shuts off at 35 psi. What else controls the pressure?? The PO swears that the pump was changed about a month before I bought it. And this truck sat a while before I bought it.

If it is a 03 the pressure should be 48psi while running. If it is 04+ the pressure should be 58psi while running.

 

[Charger]

Thanks fellas, changed out the pump. No fun at all. Raised the bed up and propped it up on 2x6's Anyway shes running well so far, we'll see how long the cheesy AirTek pump lasts.

 

[Redtruck-VA]

Well done...